The plush-crested jay (Cyanocorax chrysops), also known as the plush-crested cyanocorax or blue jay, is a striking bird species native to South America. Here’s a description of its distribution:

1. Brazil: Plush-crested jays are found primarily in Brazil, particularly in the central and eastern parts of the country. They inhabit various habitats, including tropical and subtropical forests, woodlands, savannas, and forest edges.
2. Argentina: Plush-crested jays are also found in parts of northeastern Argentina, where they inhabit similar habitats to those found in Brazil. They may be present in provinces such as Misiones and Corrientes.
3. Paraguay: Plush-crested jays are known to occur in Paraguay, although their distribution in the country may be less well-documented compared to Brazil and Argentina. They inhabit forests and woodlands in eastern Paraguay.
4. Bolivia: In Bolivia, plush-crested jays can be found in the eastern lowlands and foothills of the Andes Mountains. They inhabit forests, woodlands, and gallery forests along rivers.

Plush-crested jays are known for their striking appearance, characterized by vibrant blue plumage on their head, back, and wings, contrasting with a black mask around their eyes and a white throat and belly. They have a distinctive crest of feathers on their head, which gives them their name.

These jays are highly social birds, often seen in small groups or family flocks, foraging together for insects, fruits, seeds, and other food items. They are known for their loud and raucous calls, which they use to communicate with each other and to warn of potential threats.

Despite being relatively widespread, plush-crested jays face threats from habitat loss and fragmentation due to deforestation and agricultural expansion. Conservation efforts, including habitat protection and restoration, are important for ensuring the survival of this species in its native range.